55 °F at a glance
- Celsius
- 12.78 °C
- Exact fraction
- 12 7/9 °C
- Kelvin
- 285.93 K
- Rankine
- 514.67 °R
- Rounded
- 13 °C
- Quick estimate
- 12.5 °C
How to convert 55 °F to Celsius
(55 − 32) × 5/9 = 23 × 5/9 = 115/9 = 12.78 °C
Subtract 32 first because the two scales put zero in different places, then multiply by 5/9 because a Fahrenheit degree is only 5/9 the size of a Celsius degree. 23 is not a multiple of 9, so the exact answer is the repeating decimal 12 7/9 °C.
Estimate it in your head
Subtract 30 and halve: (55 − 30) ÷ 2 = 12.5 °C. That is 0.3 degrees low, close enough to decide what to wear.
What 55 °F feels like
55 °F (12.78 °C) is close to the classic cellar temperature of about 55 °F that wine storage aims for: cool enough to slow aging, warm enough not to chill the wine.
Indoors, 55 °F is below the 68 °F daytime winter setting the US Department of Energy suggests for saving energy, so a home this cool would usually have the heat on.
Temperatures near 55 °F
| Fahrenheit | Celsius | Kelvin |
|---|---|---|
| 50 °F | 10 °C | 283.15 K |
| 51 °F | 10.56 °C | 283.71 K |
| 52 °F | 11.11 °C | 284.26 K |
| 53 °F | 11.67 °C | 284.82 K |
| 54 °F | 12.22 °C | 285.37 K |
| 55 °F | 12.78 °C | 285.93 K |
| 56 °F | 13.33 °C | 286.48 K |
| 57 °F | 13.89 °C | 287.04 K |
| 58 °F | 14.44 °C | 287.59 K |
| 59 °F | 15 °C | 288.15 K |
| 60 °F | 15.56 °C | 288.71 K |
Going the other way: 13 °C in Fahrenheit is 55.4 °F.
Frequently asked questions
What is 55 °F in Celsius?
55 °F is 12.78 °C: subtract 32 (23) and multiply by 5/9.
Is 55 °F hot or cold?
55 °F is cool: sweater or light-jacket weather.
How do you convert 55 °F to Celsius in your head?
Subtract 30 and divide by 2: (55 − 30) ÷ 2 = 12.5 °C, compared with the exact 12.78 °C.
What is 55 °F in Kelvin?
55 °F is 285.93 K. Convert to Celsius (12.78 °C) and add 273.15.